The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 02, 1984
Filed:
Jun. 23, 1983
Siegfried Billenstein, Burgkirchen/Alz, DE;
Fritz J Gohlke, Burgkirchen/Alz, DE;
Hoechst Aktiengesellschaft, , DE;
Abstract
The new petroleum breakers are obtained by reacting, at 90.degree. to 160.degree. C. and at a pH value of 6 to 9, (a) an addition product which has been obtained by reacting phenol with formaldehyde or acetaldehyde in a molar ratio of 1:1 to 3 at a temperature of 50.degree. to 80.degree. C., in the presence of an alkaline catalyst, with (b) a block polymer which contains nitrogen and which has been obtained by an addition reaction in which 10 to 80 moles of ethylene oxide and propylene oxide are added on, as a statistical average per nitrogen atom, the molar ratio of ethylene oxide to propylene oxide being 1:0.5 to 14, to ethylenediamine, propylenediamine, polyethylenepolyamines, polypropyleneamines or mixtures thereof, the ratio being 1 to 20 moles of (a) to 1 mole of (b). They are distinguished by a high degree of effectiveness when used for separating petroleum emulsions. Products which in some cases have an even greater effect are obtained if the reaction product of (a) and (b) is propoxylated.